By Joyce Laird, Contributing EditorWhat is different about
self-aligning bearings vs. basic bearings?In a self-aligning
bearing, the inner ring has two raceways and the outer ring has a
single spherical raceway with its center of curvature coincident
with the bearing axis. This allows the axis of the inner ring,
balls and cage to deflect around the bearing center to
automatically correct misalignment caused by housing and shaft
machining or installation error.Paul Brda, Application Engineer,
NSK Americas explains, "Whereas a ball bearing only has one raceway
groove on both the inner and outer ring and is the most common type
of rolling bearing."Why would you choose to use self-aligning
bearings?Self aligning bearing cut-away imageA self-aligning
bearing is recommended when the alignment of the shaft and housing
is difficult or when the shaft may bend during operation. Brda
notes that similar to deep groove ball bearings, most self-aligning
ball are for general use.Can they interchange with standard ball
bearing assemblies?Depending on the series, most self-aligning
bearings can be interchanged with standard ball bearing assemblies.
(6200 and 6300 have direct interchanges with the 1200 and 1300
series). "However, if this is not possible, the self-aligning
bearing may be wider or can have a tapered bore," Brda
explains.Selection and Installation tipsAccording to Brda, the
bearing would be selected based on the load, speed and space
constraints of the application. Also, the misalignment and/or shaft
bending amount should be considered when specifying bearing
type.Normal mounting and handling procedures for a cylindrical bore
bearing should be followed. For the tapered bore, special care must
be taken to ensure the bearing is driven up the taper the
appropriate amount. Because matching the bearing to the specific
application is critical, it is important to verify your application
need with your selected vendor. Series108 126 196 1200 1300
2200 2300 GNYAR MODELDimensionKNr/minWeightkg10000
(TN1,M)10000K
(KTN1,KM)dDBCrCorGrease Oil 135 51962.50.55 32000380000.009196(V6) 61551.60.431000370000.006126 1962.50.5532000380000.009127 72272.70.6530000360000.014108 82272.70.6530000360000.014129 92683.90.9526000320000.02212001200K103095.481.2024000280000.03522002200K30147.121.5824000280000.05013001300K35117.221.6220000240000.06023002300K351711.02.4518000220000.09012011201K1232105.551.2522000260000.04222012201K32148.801.8022000260000.05913011301K37129.422.1218000220000.07023012301K371712.52.7217000220000.10412021202K1535117.481.7518000220000.05122022202K35147.651.8018000220000.0613021302K42139.502.2816000220000.123022302K421712.02.8814000180000.1112031203K1740127.902.0216000200000.07622032203K40169.002.4516000200000.0913031303K471412.53.1814000170000.1423032303K471914.53.5813000160000.1712041204K2047149.952.6514000170000.1222042204K471812.53.2814000170000.1513041304K521512.53.2812000150000.1723042304K522117.84.7511000140000.2212051205K25521512.03.3012000140000.1422052205K25521812.53.4012000140000.1913051305K621717.85.0510000130000.2623052305K622424.56.489500120000.3512061206K30621615.84.7010000120000.2322062206K622015.24.6010000120000.2613061306K721921.56.288500110000.39823062306K722731.58.688000100000.5012071207K35721715.85.088500100000.3222072207K722321.86.658000100000.4413071307K802125.07.95750095000.5423072307K803139.211.0710090000.6812081208K40801819.06.958500100000.4222082208K802331.910750090000.5113081308K902333.811.2670080000.7223082308K903354.016.0630075000.9312091209K45851922.97.8750090000.4722092209K852332.510.6700085000.5513091309K1002539.013.4630075000.9623092309K1003663.719.3560067001.2512101210K50902026.59.15700085000.5322102210K902333.811.2630075000.6013101310K1002743.614.0560067001.223102310K1004063.720.0530063001.65
GNYAR
MODELDimension mm KN r/minWeight kg 10000
(TN1,M) 10000K
(TN1,M)dDBCrCorOil2200-2RS2200-2RSK1030145.531.18170000.0482201-2RS2201-2RSK1232146.241.43160000.0532202-2RS2202-2RSK1535147.411.76140000.0582302-2RS2202-2RSK421710.82.6120000.112203-2RS2203-2RSK1740168.842.2120000.0892303-2RS2303-2RSK471912.73.4110000.162204-2RS2204-2RSK20471812.73.4100000.142304-2RS2304-2RSK522114.34.095000.212205-2RS2205-2RSK25521814.34.090000.162305-2RS2305-2RSK622419.05.475000.342206-2RS2206-2RSK30622015.64.6575000.262306-2RS2306-2RSK722722.56.867000.512207-2RS2207-2RSK35722319.06.063000.412307-2RS2307-2RSK803126.58.556000.702208-2RS2208-2RSK40802319.96.9556000.502308-2RS2308-2RSK903333.811.250000.962209-2RS2209-2RSK45852322.97.853000.532309-2RS2309-2RSK1003639.013.445001.32210-2RS2210-2RSK50902322.98.1548000.572310-2RS2310-2RSK1104043.614.040001.65
GNYAR
MODEL(mm) KNr/min kg(TN1, d DB
D2
C CrCoroIL 11204 204714 28.9 40 12.73.490000.1811205255215 33.34414.34.080000.22113056217384819.05.467000.411120630621640.14815.64.6567000.35113067219455222.56.856000.6111207357217475219.06.056000.5411307802151.75626.58.550000.8111208408018545619.96.9550000
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